405122313 has 8 divisors (see below), whose sum is σ = 568592800. Its totient is φ = 255866688.

The previous prime is 405122303. The next prime is 405122317. The reversal of 405122313 is 313221504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 405122313 - 2¹⁰ = 405121289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 405122313.

It is not an unprimeable number, because it can be changed into a prime (405122317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3553648 + ... + 3553761.

It is an arithmetic number, because the mean of its divisors is an integer number (71074100).

Almost surely, 2^405122313 is an apocalyptic number.

It is an amenable number.

405122313 is a deficient number, since it is larger than the sum of its proper divisors (163470487).

405122313 is a wasteful number, since it uses less digits than its factorization.

405122313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7107431.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 405122313 is about 20127.6504590079. The cubic root of 405122313 is about 739.9380962339.

Adding to 405122313 its reverse (313221504), we get a palindrome (718343817).

The spelling of 405122313 in words is "four hundred five million, one hundred twenty-two thousand, three hundred thirteen".